There is a movement today that is based upon faulty reasoning. It is true that the banks today do not use lawful money. So, what happens when you borrow that non-lawful money? Do you use it? If you gain value by using it, fairness dictates that you repay.
If the store offers you a loaf of bread for ten acorns, what right do you have to take the bread and then complain that acorns are not really money?
If you do not want to pay your credit card debt, do not use credit cards. Yes, the banking industry is based upon the fraud of the Fed, but that does not justify you if you participate in the fraud.
If you get value, pay for it!
Those who claim that the bank posts your promissory note as an asset on the bank's books are correct. That IS what the bank does. However, that asset is a contingent asset. The value to the bank depends upon your promise to PAY. If you do not pay, the asset vanishes.
GREED spawns schemes like this. If it sounds too good to be true, it is!